
Robert J. answered 09/30/13
Tutor
4.6
(13)
Certified High School AP Calculus and Physics Teacher
1) Since the two lines are parallel, they have the same slope. So, the equation can be written as
y = 4x+b
Now, you plug in (3,8),
8 = 4*3+b => b = -4
Answer: y = 4x-4
2) Since the two lines are parallel, both lines are vertical lines. So, the equation is x = -6.
Answer: x = -6